EVERGREEN

Plant Encyclopedia

Salix integra

Salix integra ("Inukoriyanagi")

Japanese name: イヌコリヤナギ (犬行李柳)
Scientific name: Salix integra

Salix integra

[Overview]
A deciduous shrub about 2–3 m tall, found in wet or moist places.
It is dioecious.
Leaves are simple, alternate or opposite, oblong-elliptic, 4–8 cm long and 1.5–2 cm wide, with low, fine serrations.
Most leaves are stalkless; when a petiole is present it is 5 mm long, and there are no stipules.
The flowers are densely borne on cylindrical catkins that appear before the leaves unfold, with 3–4 leaves at the base.
Male catkins are 2–3.5 cm long and 0.6–1 cm across, and the anthers of the stamens are deep red.
Female catkins are 1.5–2.5 cm long and 0.4–0.5 cm across, densely covered with short white hairs.
The flowers have no petals.
The fruit is a capsule that splits open when ripe, releasing seeds wrapped in cottony hairs called ryujo (willow cotton).

[Cultivation]
Propagate by cuttings.
It prefers sunny, well-drained, moist soil.
It dislikes dry places.
In winter, apply organic fertilizer around the plant.
Pests and diseases include powdery mildew, rust, longhorn beetles and aphids.

Details

Names
Japanese: イヌコリヤナギ(犬行李柳)
Life form
Shrub
Evergreen / deciduous
Deciduous
Leaf type
Broadleaf
Habit
Terrestrial
Planting (or sowing) season
March, April, November, December
Flowering season
March, April, May
Distribution or origin
Japan (Hokkaido, Honshu, Shikoku, Kyushu), Korea, northeastern China, Amur, Ussuri, Russian Primorye, southern Kuril Islands
Growth form
Branching
Height
2000–3000 mm
Leaf shape
Simple leaf (unlobed)
Leaf arrangement
Opposite, Alternate
Leaf margin
Serrate
Inflorescence length
15–35
Leaf color
Green
Availability of seeds and plants
Low
Form sold
Seedlings
Propagation
Cuttings
Sun exposure
Full sun
Water needs
Moderate, Moist
Soil needs
Required
Suitable uses
Parks and gardens, Waterside greening
Diseases
Powdery mildew, Rust
Pests
Longhorn beetles, Aphids
Japan Flower Trade Code
54802

Translated from our Japanese encyclopedia. If anything differs, the Japanese page is correct.

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